16606620 has 168 divisors, whose sum is σ = 56188944. Its totient is φ = 4105728.

The previous prime is 16606573. The next prime is 16606631. The reversal of 16606620 is 2660661.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 247827 + ... + 247893.

It is an arithmetic number, because the mean of its divisors is an integer number (334458).

Almost surely, 2^16606620 is an apocalyptic number.

16606620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16606620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28094472).

16606620 is an abundant number, since it is smaller than the sum of its proper divisors (39582324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16606620 is a wasteful number, since it uses less digits than its factorization.

16606620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 16606620 is about 4075.1220840608. The cubic root of 16606620 is about 255.1293461441.

The spelling of 16606620 in words is "sixteen million, six hundred six thousand, six hundred twenty".